Louise Rennison was an English author and comedian who wrote the Confessions of Georgia Nicolson series for teenage girls. The series records the exploits of a teenage girl, Georgia Nicolson, and her best friends, the Ace Gang. Her first and second novels, Angus, Thongs and Full-Frontal Snogging and It's OK, I'm Wearing Really Big Knickers were portrayed in a film adaptation called Angus, Thongs and Perfect Snogging. She also wrote a series of books about Georgia's younger cousin, The Misadventures of Tallulah Casey.

Angus, Thongs and Perfect Snogging is a 2008 teen romantic comedy film co-written and directed by Gurinder Chadha, based on the young adult novels Angus, Thongs and Full-Frontal Snogging (1999) and It's OK, I'm Wearing Really Big Knickers (2000) by Louise Rennison. The film stars Georgia Groome, Alan Davies, Karen Taylor, Aaron Johnson and Eleanor Tomlinson. The plot follows 14-year-old Georgia Nicholson (Groome) as she tries to find a boyfriend while also organising her 15th birthday party.